Pop superstar Lady Gaga raised eyebrows during her performance at South By South West as an artist vomited paint on to her while she was singing 'Swine'. 

Following the set, Demi Lovato revealed that she was really disgusted by the act and that it glamourised eating disorders, writing on Twitter: 

“Sad… As if we didn't have enough people glamorizing eat disorders already. Bottom line, it's not ‘cool’ or ‘artsy’ at all. Would you let someone bring a needle and shoot up on you? Addiction is addiction.”

Now, the artist, named Millie Brown, has issued a statement to TMZ in which she defended her performance art: "There's a clear difference between using my body to create something beautiful, to express myself and feel powerful, rather than using it to punish myself and conform to society's standards."

Earlier today (March 17), Lovato tweeted: "Ain't nobody got time fo dat!!! #pettybullshit #toobusykillingit"

Watch footage of Gaga being thrown up on below: